Rheem RTG64XN

RTG64XN Natural Gas, Outdoor Whole House Tankless Water Heater, 6.4 GPM

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Rheem RTG64XN

Rheem RTG64XN Natural Gas, Outdoor Whole House Tankless Water Heater, 6.4 GPM
Rating: (1 Reviews)
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Quick Specs:
Brand: Rheem
UPC: 020352591766
Stock Id: SID231288
Fuel Type: Natural Gas
Width: 13.875"
Height: 25.625"
Depth: 9.875"
Energy Star: Yes
Technical Details
Ignition Type: Electronic
Direct Vent: No
Gas Connection: 0.75
Manifolding: Yes
Hardwired: Yes

Rheem Tankless is about one third the size of a conventional water heater. Sophisticated technology has reduced the size and increased the features and benefits. A digital display makes setting a precise water temperature, or monitoring the unit's status, a snap! Its compact size will leave room for a water softener or extra storage.


  • Minimum flow rate of.26 GPM , minimum activation flow rate of .40 GPM , 150,000 BTU
  • Remote control and 10 feet of thermostat wire is included
  • Freeze protection to -30 degrees Fahrenheit
  • Eligible for federal tax credits for energy efficiency
  • Meets low Nitrogen Oxide emission standards


Direct VentNo
Duct SizeDuctless
Energy StarYes
Fuel TypeNatural Gas
Gas Connection0.75
Ignition TypeElectronic
Indoor InstallationNo
Low Lead CompliantYes
Maximum Flow Rate6.4
Maximum Gas Input150000
Maximum Temperature140
Minimum Flow Rate0.26
Minimum Gas Input11000
Outdoor InstallationYes
Plug InYes
Water Connection0.75

Rheem RTG64XN Reviews & Ratings

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1 Reviews
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From: Tucson, AZ
Reviewed on: January 24, 2013
Overall Rating: 5.0

Ease of Use:
Meet Expectations:
Bang for Your Buck:

Pros: plenty of hot water; has worked great
"We had this unit installed as part of a total remodel of our master bath approximately 18 months ago. It has work perfectly and well worth the expense. We ofter have 6 or more family members stay for up to a week and we have never had a problem having enough hot water. Great product." Will Recommend: Yes
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